Monitor engine coolant temperature with the Standard Ignition TS-233 Engine Coolant Temperature Sender / Coolant Fan Switch, which uses an NTC thermistor to sense coolant temperature. It fits many vehicles, among them the 1972-1987 Jaguar XJ6, 1963-1975 MG MGB and 1962-1969 MG Midget; see the "Vehicles it fits" section for the full list.
Standard Ignition catalogs this part under two names, Engine Coolant Temperature Sender and Coolant Fan Switch, so you may see it listed either way.
- Brass housing: Resists corrosion and supports proper heat conductivity.
- NTC thermistor: Uses a high-quality thermistor designed for accurate temperature measurement.
- Extensive testing: Goes through extensive testing for reliability.
- Quality control: As a global manufacturer, Standard Ignition maintains quality control across the entire manufacturing process.
Signs this part may need replacing: An erratic or absent temperature reading, a cooling fan that doesn't switch on or off as expected, or coolant seeping around the unit. These symptoms can have other causes, so diagnose the system before you replace anything. If a failed sender or switch is the cause, the TS-233 replaces it.
See the "Vehicles it fits" section for engine details.
Interchange: WT525 · TU141 · TS6062 · GTR104 · GTR108 · 150843 · GTR110
This part cross-references / interchanges with the following part numbers:
WT525, TU141, TS6062, GTR104, GTR108, TS-233, 150843, GTR110
Frequently Asked Questions
What does the Standard Ignition TS-233 do?
It uses an NTC thermistor to sense engine coolant temperature. Standard Ignition lists it both as an engine coolant temperature sender and as a coolant fan switch.
Is the TS-233 the right MGB switch for a 1963-1975 MG MGB?
Yes, it is listed for the 1963-1975 MG MGB. See the "Vehicles it fits" section for other model years and engine details.
What is the TS-233 housing made of?
The housing is brass, which resists corrosion and supports proper heat conductivity.
What are signs a coolant temperature sender may need replacing?
Signs include an erratic or absent temperature reading, a fan that doesn't switch as expected, or coolant seeping around the unit. Other faults can cause these too, so diagnose first.
Which part numbers does the TS-233 cross-reference?
It cross-references WT525, TU141, TS6062, GTR104, GTR108, 150843 and GTR110.
